Blender Git Loki

Merge branch 'blender2.8' into greasepencil-object

Eevee: Principled: Fix Subsurface input behaviour

Match Cycles behaviour of scalling the SSS radius and don't interpolate
between diffuse and SSS result.

Merge branch 'blender2.8' into soc-2018-bevel

Merge branch 'blender2.8' into greasepencil-object

Render Preview: Fix ID freeing in wrong function

Merge branch 'blender2.8' into greasepencil-object

Eevee: Fix wrong SSR reprojection when switching orthographic view

We just reset the temporal sampling and avoid using the previous frame
for SSR at all.

Revert temp fix for materials preview

Eevee: LightProbes: Fix RNA defaults and remove unused data_draw_size

Eevee: Lamps: Fix RNA defaults and change defaults for contact shadows

Merge branch 'blender2.8' into greasepencil-object

Conflicts:
source/blender/editors/render/render_preview.c

Render Preview: Fix memory leak

Render Preview: Fix problem with multi size icon preview

The id was free after each size.
We now only free after the job has finished.

GPUMaterial: Cleanup unused headers

Merge branch 'blender2.8' into greasepencil-object

Fix segment fault with material previews

This fix solves the issue with multiple previews at the same time. Maybe there wll be a more general solutions in render preview module, but we need keep the system running.

GPUMaterial: Texture Node: Add support for Cubic filtering

Like in cycles it's a bit more slower than linear but it's smoother.

Works for all projection type.

GPUMaterial: Texture Node: support for nearest (closest) filtering method

Add placeholder for cubic and smart filtering for now.

GPUMaterial: Optimize and fix blending in box mapping

Blending was done in srgb space and was not matching cycles.

Optimized by using less branches and more vector operations.

Fix T54455, T56053, T55564: Cycles OpenCL build error after recent changes.